Many animals live in the polar ice ecosystem. what makes this possible? a. cold air c. floating algae b. large numbers of plankton d. coral reefs

Amoeba sisters video recap pedigrees

In which part of the body is a ball-and-socket joint found?

Which of the following is the best definition of a eukaryota? a. a one-celled organism that does not have a membrane-bound nucleus b. a one-celled organism that does not have a cell wall c. an organism whose cells each contain a membrane-bound nucleus d. an organism whose cells each have a cell wall